Wedgwood Jasperware Portland blue Pomander

I have just been to a Car Boot Sale (indoor) and come away with 2 nice pieces of Wedgwood Jasperware. This is the first piece, a Portland blue Pomander, decorated with 4 dancing hours figures. It still has its original label and potpourri bag inside, shedding bits everywhere! there is a faint mark on the rim that may be a date - maybe 1980's!